Use concat() in m_putenv.  Add FIXME about memory leaks. POSIX defines setenv(3) and unsetenv(3).  They seem like a good route, just need to preserve the existing functions' behaviour.
Use concat() in m_putenv.  Add FIXME about memory leaks.
POSIX defines setenv(3) and unsetenv(3).  They seem like a good route,
just need to preserve the existing functions' behaviour.

mcr/nmh,mcr/nmh